Triumph Unit High Level Exhaust Pipe / Pair 1963-66OD at silencer end 1 3/8" - 35 mmID at cylinderhead ca. 42 mmOD at cylinderhead end: 45 mmMade in EnglandPlease look at all pictures
Carb. Series 900 Concentric with Gauze Largest Diameter of Bellmouth: 73mm AlloyDiameter inner by thread 44 Length - 60mm f.e. they do not fit 750/850 Norton Commando